Staple-lasting machine



M. BROOK, sum LASTING MACHINE.

APPLICATION FILED MAR.26,19I5- 1,327,196 Patented Jan. 6,1920.

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M. BROCK.

STAPLE LASTING MACHINE.

APPLICATION FILED MAR. 26, I915. 1,327,196, I v Patented Jan. 6,1920.

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Patented Jan. 6,1920. I

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MATTl-IIAS BBOCK, OF BOSTON, MASSACHUS TO UNITED SHOE li IACHINERY CORPOB.

PORATION OF NEW JERSEY. v

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STAPLE-LASTING MACHINE.

Specification of Letters Patent.

Patented J an; 6, 1920.

Application filed March 26, 1915. Serial No. 17,182.

To all whom it may concern:

Be it known that I, MAT'rHIAs BROOK, a citizen of the United States, residing at Boston, in the county of Sufiolkand State of Massachusetts, have invented certain Improvements in Staple-Lasting Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to staple lasting machines and is herein shown as embodied in a machine particularly adapted for use in lasting.

The machine in which the invention is shown as embodied is of the general type disclosed and claimed in United States Letters Patent to A. H. Prenzel, No. 1,117,087, November 10, 1914, and a general object of the present invention is to provide an improved machine of this type which will successfully meet the varying conditions in shoe manufacture.

Up to the time of the development of the process of making stitch-down shoes which involves the lasting of the. shoes by means of staples, shoes of the stitch-down type were made usually only in the extreme sizes; that is, the stitch-down process was used principally for the making of childrens shoes and of mens coarse heavy shoes. In both cases little effort was made to obtain careful shaping of the upper to the last, and, moreover, the lasts were usually not shaped to correspond to the shape of the foot. Since the development of staple lasting it has been found that this process of making shoes can be employed successfully in making shoes of betterrgrades, but in order to conform the upper closely to the last inthe manufacture of such shoes it is essential that the machine for performing the lasting operation be so constructed that various kinds and sizes of shoes may be manipulated freely in the lasting operation and supported during manipulation in such manner as to permit of efiective operation thereon.

One of the objects of the inventionis to provide improved means for supporting the shoe during the upper stretching. and wiping operations and also during the fastening inserting operation.

. operator;

The invention also aims'to provide an improved lasting tool by which the lasting of the upper about both the convexly and the concavely curved portionsof'the last may be facilitated. a

Other objects and important features of the invention will appear from the following description and claims when considered in connection withthe accompanying drawings, in which Figure 1 is a broken side elevation of a machine embodying the invention;

Fig. 2 is a sectional plan showing the arrangement of the work support operating treadle and the starting treadle whereby they may be operated by a single footv of the Fig. 3 is a front elevation of the upper part of'the machine; 1

Fig. 4: is, a detail perspective showing the construction of the work support and of the guide for the work support;

Fig. 5 is a side elevation of-the combined lasting toolnnd staple guiding nozzle;

Fig. 6 shows a modification of the lasting tool; and I Fig. 7 is a sectional plan showing the manner of using the modification shown in Fig. 6.

.The illustrated machine comprises staple forming and inserting mechanism, including a lasting tool which serves also to guide the staple into position to secure the shoe upper in lasted position, and a work support comprising a sole rest upon which the sole of the shoe to be lasted is supported, the work support being movable toward the lasting tool to cause said tool to effect the upper stretching and wiping operations. The machine is intended particularly for use in practising theprocess described and claimed in United States LettersPatent to i A. H. Prenbel No.1,117,086, November 10,

The staple forming and ins rting mechanism is of the type of that disclosed in United States Letters Patent-to W. H. Borden No. 1,017,930, February 13, 1913, except that. the construction mechanism has been modified and improved to provide room in which the shoe .to be lasted can be more freely manipulated. Like the machin o of the Letters Patent to Borden,

of the wire feeding be s e re s the iter ed mala comprises a driver bar 16 lifted against the action of a spring 20 by a lifting cam 11 acting upon a blockld upon said driver bar, and a feed roll 90 operated by connections to a slotted lever 100, more fully described in said Letters Patent to Borden, said slotted lever 100 being in turn rocked by a second lever 106 having an arm 110 which carries a cam roll entering a cam groove in a cam disk 55.

The wire which forms the staples is fed to the staple forming mechanism in substantially the same manner as in the machine shown in said Letters Patent to W. H. Borden, and is cut by cutting mechanism of substantially the same construction. As in themachine shown in said Letters Patent to WV. H. Borden the release of the wire for the return movement of the feed roll 90 is eflected during the cutting; operation by the action of a plunger 7 5 which engages an adjustable stop 76 upon a lever 140 which carries the coiiperating presser roll 142.

It will be noted that this lever 14-0 of the illustrated machine diifers in its construction and, arrangement from the corresponding lever of the machine shown in the Letters Patent to W. H. Borden above identified. In order that'the shoe may be rocked freely about the lasting tool 1 1%, particularly when operating in deep shanks of mens or womens shoes, the fulcrum for the lever 140 has been located at 146 at a point above the feed roll 90, and the presser roll 142 is therefore moved laterally with respect to the feed roll 90, instead of downwardly, to release the wire. A spring 147, located be tween the arm of the lever 140 which extends a above the fulcrum 146 and a bracket arm cants co-pending divisional about its fulcrum 146 'wlre down into the lower coils of the 1-18 upon the machine head, operates to maintain the presser roll 14:2 yieldingly in pressing relation to the feed roll 90. During the cutting operation the action of the plunger 75 upon the stop 76 rocks said lever 140 and moves the presser roll 142 toward the left out of pressing relation to the feed roll 90.' The staplingmachine comprising the wire feed mechanism disclosed herein is not claimed in this application but is disclosed and claimed in appliapplication Serial No. 273,452, filed January 27, 1919.

The wire 150, which is preferably com-, paratively fine,

is wound upon a spool 152 which turns upon a stud 15-1 upon a bracket 156 carried by the machine head, any suitable means being provided for frictionally retarding the turning of said spool. 7 To prevent too rapid unwinding of the spool and also to prevent the pull of the wire during the feeding operation from drawing the I spool, thus causing it to kink or tangle, a tension device 18 provided which comprises a grooved Wheel l58 carried by a spring supported plunger 160 guided through the spring socket 162 and limited in its downward movement by a pin 16% traveling in a slot in said socket, whereby it prevents the plunger from turning in the socket.

In the illustrated machine the relative lasting movement of the work support and the lasting tool is manually effected, and separate means is provided for eifecting the actuation of the staple forming and inserting mechanism, these two means being so arranged that they can be operated by a single foot of the operator, usually by a single continuous movement.

movement in upper and lower guides 168,

170 upon a bracket 172 attached to the front of the post 174: of the machine frame. Fulcrumed at 176 between depending ears 178 upon the bracket 172 is a lever 180 which carries at its forward end an adjustable stop 182 arranged to engage the lower end of the rod 166, the rear end of said lever 180 being connected by an adjustable link 18% to a treadle lever 186 having at its front end a tread 188. The lever 186 is of the second class and is fulcrumed at 190 at the rear of the machine base. The illustrated work support, like that disclosed in the Letters Patent to A. H. Prenzel, No. 1,117,087, November 10, 1914, has an inclined work supporting face 192 offset at 194:, provision being made for varying the inclination of this face. As in the machine shown in my co-pending application Serial No. 120, filed January 2, 1915, the sole supporting face 192 is formed upon a segmental block 196 guided for adjustment about an axis lying in said offset 194:. In the construction here-' in shown the block is provided with flanges 198, one of which is received in a' groove formed in a horizontally adjustable slide 200, and the other. of which is received in a groove formed in a clamp plate 202 confined upon said slide 200 by a squareheaded cap screw 20%, the clamp 202 serving to clamp the block 196 in its different positions of angular adjustment. The block holder slide 200 is itself carried by a split block 206 attached to the upper end of the rod 166 and provided with dove-tailed guideway in which is received a dove-tail 208 upon the lower part of the slide 200. The split 210 in the block 206 opens into the dove-tailed guideway in said block, whereby the sides of the guideway may be drawn together to clamp the dove-tail 208, and thereby the block 200, in its difierent positions of horizontal adjustment. For this clamping operation two screws 212, 214 are provided, the latter being extended to provide a connection for one end of a spring 216 which tends to move the work support back to its lowermost position, the other end of said spring being connected to a lug (not shown) upon the side of the bracket 172. i

In view of the fact that the supporting face 192 of the work support is normally inclined to the direction of movement, there is a considerable lateral component of force during the lasting operation which tends to bend the work support back toward the machine. To provide substantial lateral rigidity during the lasting movement, and at the same time to permit horizontal. adjustment of the work support, a lateral support and guide 218 is formed upon, or attached to, the upper end of the bracket 172, this support being provided with a plane vertical face 220 over which slides a corresponding face upon the rear of the carrier block 206.

In this machine provision is preferably made for clenching the ends of the staple; for example, by the insertion in the sole supporting face of the block 196 of a plug 222 of material harder than that of the block 196. In this plug clenching cavities may be formed if found desirable, although it has been found that staples will clench quite satisfactorily upon such a plug without especial provision for guiding the ends of the legs. It is important, however, if

clenching cavities be provided, that they be located accurately beneath the staple guiding opening 224-in the guiding tool, or nozzle 144, and, moreover, it is important that the offset 194 bear definite, relation to the line of drive. To this end the provision for horizontal adjustment of the work support. hereinabove described, is made. It will be noted that this aciustmont is in a line perpendicular to the plane of the staple guide 22-l, whereby the parallelism to this plane of the offset 194 is not disturbed.

In effecting the relative lasting movement of the work support and lasting tool after the sole of the shoe to be lasted has been located upon the supporting face 192 the operator depresses the treadle 186, h lacing the ball. or toe'end of his foot upon the tread 188. Haring effected thc desired stretching and wiping operation, which he can observe as it proceeds, he engages the tread of a second treadle 228 with the heel end of his foot, this treadle being also fulcrumed at 1 0 and being connected by a rod 230 to the starting and stopping mechanism, which is substantially the. same as that described in the Letters Patent to N. H. Borden hereinabove identified. It will be noted that the tread 188 of the treadle 186 is in a plane above the tread 2 6 of the treadle 228, so that the operator by the continuous movement of one foot may eflect the movement of the two treadles and thus effect first the stretching and wiping relative movement of the work support and the lasting tool and then the actuation of the mechanism for forming and inserting staples. This is an important feature of the invention. The treadle 228 is normally held in its uppermost position by a spring 232.

In Fig. 5 is shown the preferred form of lasting tool which has upon its front a wiping face 233 inclined to the direction of relative movement of the tool and work support at a sharply acute angle and upon its rear a comparatively straight face 234, and, connecting this face 234 with the end 236 of the nozzle, there is a clamping face 238 provided preferably with corrugations or teeth, as shown, this face serving to prevent the upper from slipping too easily over the end of the nozzle during the wiping and stretching operation and also aiding in holding the upper down and pressing it out upon the margin of the sole during the staple forming and driving operation. This tool is not of my invention.

Figs. 6 and 7 show the construction and mode of operation of a modification of the lasting tool. The purpose of the construction shown in Fig. 6 is to provide a lasting tool which will engage the upper for a greater distance along the side of the last in order to increase the stretching and wiping action, this tool being so constructed that its shape may be changed to adapt it for operation both about the convexly curved portions of the last and about the concavely curved portions. To this end the tool 240 which has a wiping face 242 similar to that upon thetool 144 is provided with lateral wings 24.6, 24-8 pivoted to turn about vertical axes lying close to the side of the tool 240, whereby the outer ends of the wings may be swung toward the front of the tool, for example, when lasting about the toe end of the shoe, see Fig. 7 at a, or may be swung toward the rear of the tool when lasting in the shank of the shoe, see b in Fig. 7. To provide for this swinging of the wings 246, 248 they are carried upon rock shafts 250, 252 extending through overhanging parts 254 of the tool 242. To the upper ends of these rock shafts are connected arms 256 connected. by links to a slide 260 guided in a plate 262 attached to the under side of the machine head and in which the tool 24-2 confined. The slide 260 may be moved toward. and. from, the tool 242 to. effect the plate 262.

sw-inging of the wings 246, 248 by means of a hand lever 264 having a slot 266 in which is received a pin or lug 268 upon the under side of the slide 260, said lever being fulcrumed at 270 upon the under side of the A dog-272, pivoted at 274 between upstanding lugs or cars upon the lever 264 and having a finger piece 276 against which a spring 278 acts, is pressed by said spring 278 into engagement with looking teeth 280 formed upon an edge of the plate 262 concentric with the pivot or fulcrum 270.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine of the class described, a Work support having a sole supporting face provided with an offset, said sole support being adjustable about a horizontal axis lying in said offset and in addition being adjustable horizontally in a direction substantially perpendicular to said axis.

2. In a machine of the class described, fastening inserting means, a work support having a sole supporting face provided with an offset substantially in the line of insertion, said support being adjustable about a horizontal axis lying in said ofiset and being also adjustable horizontally in a direction substantially perpendicular to said axis.

3. In a machine of the class described, a work support comprising a segment-shaped block having a supporting face in which the axis of the cylindrical surface of said block lies, and holding means provided with a guide in which said block may be turned about said axis and with means for clamping the block in adjusted position.

4. In a machine'of the class described, a work support comprising a segment-shaped block having lateral flanges concentricwith the axis of the cylindrical surface of said block, a clamp comprising two members in which are formed guides for the respective flanges, and means for moving said members into clamping relation to said block.

5. In a machine of the class described, a work support comprising a segment-shaped member, a holder for said member in which said member is adjustable about the axis of its cylindrical surface, and a carrier for said holder in which said holder is adjustable transversely to said axis.

6. In a machine of the class described, a work support comprising a segment-shaped member, a clamp for said member in which, said member is adjustable about the axis of the cylindrical surface of said member, and a second clamp in which said firstmentioned clamp is adjustable transversely to said axis.

7. In a machine of the class described, a Work support comprising a segment-shaped member, a holder for said member in which said member is adjustable about the axis of the cylindrical surface of said member, a carrier for said holder in which said holder is adjustable transversely to said axis,

means for clamping said member in said holder, and means for clamping said holder in said carrier.

8. In a machine of the class described, a lasting tool, a work support having an inclined work supporting face movable relatively to said tool to effect the lasting operation, and means extending along the path of movement of said support for supporting said work support against the lateral component only of lasting force exerted upon said inclined face.

9. In a machine of the class described, the combination with a lasting tool, of a cooperating work support having a work supporting surface inclined to the direction of relative movement of said tool and support, and means, located behind said support, and structurally independent thereof for preventing lateral displacement of said support due to the lateral component of lasting force upon said inclined work supporting surface.

10. In a machine of the class described, a lasting tool, a work support movable toward and away from said lasting tool and having a sole supporting face inclined to the direction of movement, and means for preventing lateral deflection of said support under the action of the lateral component of lasting force upon said inclined face, comprising a member presenting a plane face parallel to the path of movement of the support, said support being provided with a plane face engaging the plane face of said member to prevent said lateral deflection.

11. In a machine of the class described, a lasting tool having an upper engaging end adapted to engage the upper and force it into the angle between the last and the sole margin, said end of said tool being adjustable to conform to the edge contour of the last, the construction and arrangement being such that the lasting tool will follow said contour both along its straight portions and along its convexly and concavely curved portions.

12. In a machine of the class described, a lasting tool constructed and arranged for successive engagement with different portions of the upper for progressively tensioning an upper over a last and having an upper engaging end constructed and arranged to wipe the upper down over the side of the last, said tool comprising a plurality of members movable relatively to each other to vary the end contour of said tool in accordance with variations in the contour of the last so that the tool may,

conform to the last in its-various positions of adjustment along the curved edge of the last.

13. In a machine of the class described, a lasting tool having an upper engaging end adapted to engage the upper and force it into the angle between the last and the sole margin, said end of said tool being adjustable to the edge contour of the last, and means for effecting such adjustment at the will of the operator to adapt said tool either to the convexly curved portions of the last or to the concavely curved portions.

14. In a machine of the class described, a lasting tool comprising a relatively stationary member having an upper engaging end, and movable members forming lateral extensions of said stationary member, said movable members also having upper engaging ends and being movable about vertical axes whereby said ends may be brought into different angular relations to the end of said stationary member, said movable members being held in adjusted position during a lasting operation.

15. In a machine of the class described, a lasting tool comprising a stationary member, movable members forming lateral. extensions of said stationary member, and means for swinging said movable members to bring them into different angular relations to said stationary member and for holding them in adjusted position.

16. In a machine of the class described, fastening inserting means, a work support. means, comprising a normally raised treadle, for bringing said work support into work supporting relation to said inserting means, and means for actuating said inserting means, comprising a second treadle arranged tandem with the first treadle and in the path of movement of the foot of the operator when operating said first-mentioned treadle.

17 In a machine of the class described, means for operating upon work, a work sup-- port movable between work receiving position and work supporting position, two treadles arranged tandem to be operated by a single foot of the operator, one of said treadles having its tread located in a plane above the tread of the other treadle, means connected with the latter treadle for actuating the operating means, and means connected with the former treadle for moving the work support into work supporting position.

18. In a machine of the class described, fastening inserting mechanism, a work support, a treadle for actuating said fastening inserting mechanism, and a second treadle for raising said work support, said two treadles being arranged tandem to be operated by a single foot of the operator, and the tread of said work support'operating treadle being normally located in a plane above the tread of said actuating treadle,

whereby said treadles may be operated in proper succession by a single continuous movement of the foot of the operator.

19. In a machine of the class described, fastening inserting mechanism, a work sup port movable between work receiving position and work supporting position, a treadle for actuating said inserting mechanism, and a second treadle for raising said work support, said two treadles having their treads so located that one may be operated by the ball or toe of the operators foot while the pther is operated by the heel of the same not.

20. In a machine of the class described, the combination with fastening inserting mechanism, and a work support movable between work receiving position and work supporting position, of means comprising a treadle for actuating said inserting mechanism, and means comprising a second treadle for raising said work support, the tread of one of said treadles being arranged to be operated by the forward part of the foot of the operator, the tread of the other treadle being arranged to be operated by the heel end of the foot of the operator, said work support operating treadle having its tread normally located in a plane above the tread of said actuating treadle, whereby said treadles may be operated in proper succession by a continuous movement of a single foot of the operator.

21. In a machine of the class described, fastening inserting mechanism, a work support movable between work receiving position and work supporting position, a treadle for actuating said inserting mechanism, and a second treadle for raising said work sup port, the tread of said work support operating treadle being normally in a plane above the tread of said actuating treadle and being so located with respect to the tread of said actuating treadle that when the operator engages it by the forepart of his foot to raise the work support he may engage said actuating treadle with the heel of his foot at the completion of said work support raising movement.

22. In a machine of the class described, a nozzle through which fastenings are driven, a work support, automatic means for inserting fastenings, treadle controlled means for manually effecting the relative movement of the nozzle and the work support, and means, comprising a treadle arranged tandem with the first-mentioned treadle and in the path of movement of that foot of the operator which operates the aforementioned treadle controlled means for actuating said fastening inserting means.

In testimony whereof I have signed my name to this specification.

MATTI-IIAS BROCK. 

